fix improper handling of overbright pixels when saving screenshots

git-svn-id: svn://svn.icculus.org/twilight/trunk/darkplaces@2794 d7cf8633-e32d-0410-b094-e92efae38249

diff --git a/gl_backend.c b/gl_backend.c
index a206d951a0b1f0cbd4af1f806c140d857df334fe..c5fa542f4783654d115021070022080bcbb7d53c 100644 (file)
--- a/gl_backend.c
+++ b/gl_backend.c
@@ -842,7 +842,7 @@ void R_Mesh_State(const rmeshstate_t *m)
 qboolean SCR_ScreenShot(char *filename, int x, int y, int width, int height)
 {
        qboolean ret;
 qboolean SCR_ScreenShot(char *filename, int x, int y, int width, int height)
 {
        qboolean ret;

-       int i;
+       int i, j;

        qbyte *buffer;
 
        if (!r_render.integer)
        qbyte *buffer;
 
        if (!r_render.integer)


@@ -854,8 +854,13 @@ qboolean SCR_ScreenShot(char *filename, int x, int y, int width, int height)
 
        // LordHavoc: compensate for v_overbrightbits when using hardware gamma
        if (v_hwgamma.integer)
 
        // LordHavoc: compensate for v_overbrightbits when using hardware gamma
        if (v_hwgamma.integer)

+       {

                for (i = 0;i < width * height * 3;i++)
                for (i = 0;i < width * height * 3;i++)

-                       buffer[i] <<= v_overbrightbits.integer;
+               {
+                       j = buffer[i] << v_overbrightbits.integer;
+                       buffer[i] = (qbyte) (bound(0, j, 255));
+               }
+       }

 
        ret = Image_WriteTGARGB_preflipped(filename, width, height, buffer);
 
 
        ret = Image_WriteTGARGB_preflipped(filename, width, height, buffer);